return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Experimental > One molecule all properties

Experimental data for CHClCHCl (Ethene, 1,2-dichloro-, (E)-)

22 02 02 11 45
Other names
1,trans-2-Dichloroethene; 1,2-trans-Dichloroethene; 1,2-trans-Dichloroethylene; (E)-1,2-Dichloroethene; (E)-1,2-Dichloroethylene; (E)-CHCl=CHCl; Acetylene dichloride, trans-; Dichloroethylene, trans-; Ethene, 1,2-dichloro-, (E)-; Ethylene, 1,2-dichloro-, (E)-; trans-1,2-Dichloroethene; trans-1,2-Dichloroethylene; trans-Acetylene dichloride; trans-Di-1,2-Chloroethylene; trans-Dichloroethylene; 1,2-dichloroethylene;
INChI INChIKey SMILES IUPAC name
InChI=1S/C2H2Cl2/c3-1-2-4/h1-2H/b2-1+ KFUSEUYYWQURPO-OWOJBTEDSA-N Cl/C=C/Cl (E)-1,2-Dichloroethene
State Conformation
1Ag C2H
Enthalpy of formation (Hfg), Entropy, Integrated heat capacity (0 K to 298.15 K) (HH), Heat Capacity (Cp)
Property Value Uncertainty units Reference Comment
Hfg(298.15K) enthalpy of formation -0.50 2.00 kJ mol-1 2002Man:123
Hfg(0K) enthalpy of formation   2.00 kJ mol-1 2002Man:123
Entropy (298.15K) entropy 290.05   J K-1 mol-1 Gurvich
Integrated Heat Capacity (0 to 298.15K) integrated heat capacity 14.33   kJ mol-1 Gurvich
Heat Capacity (298.15K) heat capacity 66.56   J K-1 mol-1 Gurvich
Information can also be found for this species in the NIST Chemistry Webbook
Vibrational levels (cm-1) vibrations
Mode Number Symmetry Frequency Intensity Comment Description
Fundamental(cm-1) Harmonic(cm-1) Reference (km mol-1) unc. Reference
1 Ag 3073   Shim      
2 Ag 1578   Shim      
3 Ag 1274   Shim      
4 Ag 846   Shim      
5 Ag 350   Shim      
6 Au 900   Shim      
7 Au 227   Shim      
8 Bg 763   Shim      
9 Bu 3090   Shim      
10 Bu 1200   Shim      
11 Bu 828   Shim      
12 Bu 250   Shim      

vibrational zero-point energy: 7189.5 cm-1 (from fundamental vibrations)
Calculated vibrational frequencies for CHClCHCl (Ethene, 1,2-dichloro-, (E)-).
Gas-phase IR spectra can be found in the NIST Chemistry Webbook here.
Rotational Constants (cm-1) rotational constants
See section I.F.4 to change rotational constant units
A B C reference comment
       

Calculated rotational constants for CHClCHCl (Ethene, 1,2-dichloro-, (E)-).
Product of moments of inertia moments of inertia
amu3Å6   0gm3 cm6
Geometric Data
picture of Ethene, 1,2-dichloro-, (E)-

Point Group C2h


Internal coordinates
distances (r) in Å, angles (a) in degrees, dihedrals (d) in degrees
Description Value unc. Connectivity Reference Comment
Atom 1 Atom 2 Atom 3 Atom 4
rCC 1.354   1 2 1976Hellwege(II/7)
rCCl 1.718   1 5 1976Hellwege(II/7)
rCH 1.075   1 3 1976Hellwege(II/7)
aCCCl 123.8 1 2 6 1976Hellwege(II/7)

Cartesians
Atom x (Å) y (Å) z (Å)

Atom - Atom Distances bond lengths
Distances in Å
 

Calculated geometries for CHClCHCl (Ethene, 1,2-dichloro-, (E)-).

Bond descriptions


Examples: C-C single bond, C=C, double bond, C#C triple bond, C:C aromatic bond
Bond Type Count
H-C 2
C=C 1
C-Cl 2

Connectivity
Atom 1 Atom 2
C1 C2
C1 H3
C1 Cl5
C2 H4
C2 Cl6
Electronic energy levels (cm-1)
Energy (cm-1) Degeneracy reference description
0 1   1Ag
417000 1  

Ionization Energies (eV)
Ionization Energy I.E. unc. vertical I.E. v.I.E. unc. reference
9.640 0.020 9.800   webbook
Dipole, Quadrupole and Polarizability
Electric dipole moment dipole
State Config State description Conf description Exp. min. Dipole (Debye) Reference comment Point Group Components
x y z total dipole quadrupole
1 1 1Ag C2h True       0.000   0 by symmetry C2h 0 3
Experimental dipole measurement abbreviations: MW microwave; DT Dielectric with Temperature variation; DR Indirect (usually an upper limit); MB Molecular beam
Calculated electric dipole moments for CHClCHCl (Ethene, 1,2-dichloro-, (E)-).
Electric quadrupole moment quadrupole
State Config State description Conf description Exp. min. Quadrupole (D Å) Reference comment Point Group Components
xx yy zz dipole quadrupole
1 1 1Ag C2h True       C2h 0 3

Calculated electric quadrupole moments for CHClCHCl (Ethene, 1,2-dichloro-, (E)-).
Electric dipole polarizability (Å3) polarizability
alpha unc. Reference
8.150   1998Gus/Rui:163

Calculated electric dipole polarizability for CHClCHCl (Ethene, 1,2-dichloro-, (E)-).

References
By selecting the following links, you may be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to [email protected].
squib reference DOI
1976Hellwege(II/7) Hellwege, KH and AM Hellwege (ed.). Landolt-Bornstein: Group II: Atomic and Molecular Physics Volume 7: Structure Data of Free Polyatomic Molecules. Springer-Verlag. Berlin. 1976.  
1998Gus/Rui:163 M Gussoni, R Rui, G Zerbi "Electronic and relaxation contribution to linear molecular polarizability. An analysis of the experimental values" J. Mol. Struct. 447 (1998) 163-215 10.1016/S0022-2860(97)00292-5
2002Man:123 JA Manion "Evaluated Enthalpies of Formation of the Stable Closed Shell C1 and C2 Chlorinated Hydrocarbons" J. Phys. Chem. Ref. Data 31(1), 123-172, 2002 10.1063/1.1420703
Gurvich Gurvich, L.V.; Veyts, I. V.; Alcock, C. B., Thermodynamic Properties of Individual Substances, Fouth Edition, Hemisphere Pub. Co., New York, 1989  
Shim Shimanouchi, T. , Tables of Molecular Vibrational Frequencies, Consolidated Volu 10.6028/NBS.NSRDS.39
webbook NIST Chemistry Webbook (http://webbook.nist.gov/chemistry) 10.18434/T4D303

Got a better number? Please email us at [email protected]


Browse
PreviousNext